import 'package:halkyon_learn_flutter/src/feature/about/data/about_gateway.dart';

/// An [AboutGateway] without a server, naming [sourceCodeUrl]; [unreachable]
/// makes it fail as when the instance can't be reached.
class FakeAboutGateway({
  /// Where the instance says its source is.
  final String sourceCodeUrl = 'https://example.org/halkyon-learn',
}) implements AboutGateway {
  /// Thrown by the next calls while set.
  Exception? unreachable;

  @override
  Future<String> sourceCode() async {
    if (unreachable case final error?) {
      throw error;
    }
    return sourceCodeUrl;
  }
}